A DNA double helix has two strands that are held together by ____
a. hydrogen bonds
b. ionic bonds
c. hydrophobic interactions
d. phosphodiester bonds
e. covalent bonds
ANSWER: a
Biology & Microbiology
You might also like to view...
A bacterial ________ is the nontranscribed region of the DNA to which RNA polymerase binds in order to initiate transcription.
A. initiator B. operon C. promoter D. operator
Biology & Microbiology
______ are where saltwater and a source of freshwater mix.
a. Wetlands b. Estuaries c. The benthic zone d. Channels
Biology & Microbiology
What are the products of linear electron flow?
A) heat and fluorescence B) ATP and P700 C) ATP and NADPH D) ADP and NADP+
Biology & Microbiology
Know reduction involves gain - so what is reduced?
What will be an ideal response?
Biology & Microbiology